
The Shrinking Index Effect—A Global Perspective Is the “index effect” shrinking? To answer this question, S&P does a 10-year review of constituent changes in headline indices of five of the biggest equity markets in the world: S&P 500, Nikkei 225, FTSE 100, S&P/TSX 60 and DAX 30. The conclusions include that excess returns for index additions have diminished over the past five years. The median excess return of S&P 500 additions was 3.8% for the past five years, compared to 6.0% for the five years prior. The declining pattern is also observed in Nikkei 225, S&P/TSX 60 and DAX 30. To learn why the index effect is shrinking, click here for the full report.
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